When to plant sweet potato in Minneapolis
Sweet potato is frost-tender, so every date keys off Minneapolis's last spring frost of Apr 21.
Step 1 · Plant
Transplant outdoors
Jun 6 – Jun 27
Once frost risk has passed and nights stay mild.
Step 2 · Harvest
Harvest window
Sep 4 – Oct 4
Picking runs until conditions turn against the crop.
Window
Days to maturity
90 – 120 d
Minneapolis's 180-day season leaves this much room.
Sweet potato on Minneapolis's growing year
Frost-bounded season with crops mapped onto the 12-month axis.
Frost risk Growing Harvest
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
FROST
FROST
APR 21
OCT 13
Common questions
When will sweet potato be ready to harvest in Minneapolis?
Expect to harvest from around early September (Sep 4–Oct 4) in Minneapolis, based on its local frost dates. Confidence 78%.
When can I transplant sweet potato outdoors in Minneapolis?
Transplant outdoors around early June (Jun 6–Jun 27) in Minneapolis, based on its local frost dates. Confidence 84%.
How long is the growing season in Minneapolis?
Minneapolis has roughly 180 frost-free days, which is enough time to grow sweet potato to maturity outdoors.
The rule of thumb
Sow sweet potato 6–8 weeks before your last spring frost; plant out 2–3 weeks after it. Every date on this page is derived from that rule and Minneapolis's frost dates.
Confidence 87/100 · Curated · based on NOAA GHCN-Daily 1991–2020 normal · frost dates are probabilities, not guarantees.